Affichage des archives de lundi, 31 juillet 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Jul 31 1314 UTC

Prévisions SIDC

Éruptions solaires

M-class flares expected (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
31 Jul 2023	170	007
01 Aug 2023	168	028
02 Aug 2023	166	023

Régions solaires actives et éruptions solaires

The solar flaring activity was moderate during the last 24 hours, with one M1 flare produced by NOAA Active Region (AR) 3390 (magnetic type Beta) which peaked at 08:42 UTC today. Several C-class flares ranging from C1 to C6 were also produced in the last 24 hours: the brightest C6 by NOAA AR 3390 (magnetic type Beta). For the next 24 hours we are expecting few C-class flares and M-class flare from NOAA AR 3390. There are very likely a small chance of an X-flare.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.

Trous coronaux

A small positive polarity coronal hole has crossed central meridian, and it is expected to have an impact on Earth environment on 3 Aug.

Vent solaire

Earth is presently inside the slow solar wind with velocity ranging from about 400 to 500 km/s and the interplanetary magnetic field ranging from 2 nT to 6 nT. The North-South component (Bz) ranged between -5 and 4 nT. We expect to see increase in the solar wind velocity once the expected CMEs arrive at Earth.

Géomagnétisme

During the last 24 hours, the geomagnetic conditions were quiet to unsettled (NOAA Kp and K BEL 1 to 3) and we expect to see active condition or minor storm conditions when the expected CMEs arrive at Earth.

Niveaux de flux de protons

The greater than 10 MeV proton flux dropped below the 10 pfu threshold level yesterday at 16:30 UTC. It is expected to stay below the threshold level for the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The 2 MeV electron flux, as measured by the GOES-16 satellite, was below the threshold level in the last 24 hours, and it is expected to remain below the threshold level in the coming 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 180, sur la base de 14 stations.

Indices solaires pour 30 Jul 2023

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	174
AK Chambon La Forêt	012
AK Wingst	012
Ap estimé	011
Nombre international de taches solaires estimé	182 - Basé sur 33 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

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